import * as React from 'react';
export declare const PROVIDERS: {
    GOOGLE: string;
};
declare type State = {
    username: string;
    password: string;
    email: string;
    isSignedIn: boolean;
    hasLoginInFailed: boolean;
    errorMessage: string;
};
declare type Props = {
    ssoRedirectUrl?: string;
    redirectUrl?: string;
    sessionCallback: () => void;
};
/**
 *  Demo of user session, show login screen and handling user login submission.
 *
 *  To support Google SSO in your portal, you must add your domain to the Authorized Redirect URIs
 *  for Synapse authentication.
 *  This can be done by contacting synapseInfo@sagebionetworks.org to form a collaboration.
 *  Synapse engineers must add your redirect URL in the Google API console found at https://console.cloud.google.com/ for this functionality to work.
 *
 * @class Login
 * @extends {React.Component}
 */
declare class Login extends React.Component<Props, State> {
    authenticationReceiptKey: string;
    /**
     * Creates a user session, maintaining credentials
     * @param {*} props
     * @memberof Login
     */
    constructor(props: Props);
    /**
     * Updates internal state with the event that was triggered
     *
     * @param {*} event Form update
     */
    handleChange(event: React.ChangeEvent<HTMLInputElement>): void;
    /**
     * Handle user login on click
     *
     * @param {*} clickEvent Userclick event
     */
    handleLogin(clickEvent: React.FormEvent<HTMLElement>): Promise<void>;
    /**
     * Shows user login failure view on login failure
     *
     * @returns view to be displayed on user sign in error.
     */
    getLoginFailureView(): JSX.Element | boolean;
    onGoogleSignIn(event: React.MouseEvent<HTMLButtonElement>): void;
    render(): JSX.Element;
}
export default Login;